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Finding the Fourth Proportional to 251,187.78, 346,645.52 and 136,465.28

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Solution

The fourth proportional to 251,187.78, 346,645.52 and 136,465.28 is: 188,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,187.78 : 346,645.52 = 136,465.28 : x
  2. Step 2: Convert to fraction form
    251,187.78/346,645.52 = 136,465.28/x
  3. Step 3: Cross multiply
    251,187.78x = 346,645.52 × 136,465.28
  4. Step 4: Simplify right side
    251,187.78x = 47,305,075,531.99
  5. Step 5: Solve for x
    x = 47,305,075,531.99/251,187.78
  6. Step 6: Final answer
    x = 188,325.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.